Bake your favorite 2-layer cake recipe or mix following recipe instructions. Cool in pan on wire rack 10 minutes. Remove from pan and cool completely. Cover 13 x 19 in. cake board in Fanci-Foil Wrap. Position cooled cake on prepared board.
Tint buttercream icing blue; spatula ice cake and board around cake. Position roof peak on top of cake; add tip 3 icing outline message.
Place 2 large turrets on the back corners of cake (additional icing may be needed to attach turrets to the cake sides.) Place 2 medium turrets on the front corners of cake. Insert door on cake; position windows. Arrange 4 small turrets, pushing down into cake to the cake board. Attach candy-coated chocolate using dots of buttercream icing around base of turrets and at front of roof peak. Attach sugar cones and turret peaks to turrets, securing with icing. Position candy coated gum squares around peaks. Position candy for bottom cake border, on cake sides and on turret peaks, securing with dots of icing. Insert gummy bears around top border.